Low Cost Hub With Read-Only Ports?

Low Cost Hub With Read-Only Ports?
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Subject Author Date
Low Cost Hub With Read-Only Ports? Will 05-23-2007
Posted by Will on May 23, 2007, 11:17 pm
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Does anyone make a low cost four to eight port 10/100 hub that has a way to
designate one of the ports as "readonly"? I want to have a notebook act as
a sniffer behind an infected computer without exposing the notebook to any
attack. I've seen what true network TAPs cost, and it seems silly to
spend $600 to $2K for fairly trivial functionality like this. Portability
is a key requirement so having a smaller desktop hub that is also
programmable would be desirable. Any candidates?

--
Will



Posted by Al Dykes on May 23, 2007, 11:24 pm
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>Does anyone make a low cost four to eight port 10/100 hub that has a way to
>designate one of the ports as "readonly"? I want to have a notebook act as
>a sniffer behind an infected computer without exposing the notebook to any
>attack. I've seen what true network TAPs cost, and it seems silly to
>spend $600 to $2K for fairly trivial functionality like this. Portability
>is a key requirement so having a smaller desktop hub that is also
>programmable would be desirable. Any candidates?
>
>--
>Will


If you run your sniffer laptop from a CD-bootable OS (knoppix and many
others) if it *does* gete infected, a reboot will fix it.




--
a d y k e s @ p a n i x . c o m
Don't blame me. I voted for Gore. A Proud signature since 2001

Posted by Sebastian G. on May 24, 2007, 12:19 am
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Will wrote:

> Does anyone make a low cost four to eight port 10/100 hub that has a way to
> designate one of the ports as "readonly"?


Ehm... what about simply cutting one of the wires, trivially creating a
Rx-only ethernet cable?

Posted by Will on May 24, 2007, 12:34 am
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> Will wrote:
>
>> Does anyone make a low cost four to eight port 10/100 hub that has a way
>> to designate one of the ports as "readonly"?
>
> Ehm... what about simply cutting one of the wires, trivially creating a
> Rx-only ethernet cable?

Clever idea...which wire do I cut, and perhaps some vendor sells such a
cable to avoid the hassle?

--
Will



Posted by Sebastian G. on May 24, 2007, 12:33 pm
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Will wrote:


>> Ehm... what about simply cutting one of the wires, trivially creating a
>> Rx-only ethernet cable?
>
> Clever idea...which wire do I cut, and perhaps some vendor sells such a
> cable to avoid the hassle?

http://en.wikipedia.org/wiki/Ethernet_cable#Ethernet_over_twisted-pair_cable

Dunno if a vendor sells it, in any large companies the admins do all the
cabling themselves.

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